TreeFlow is a comprehensive web resource for tree-ring reconstructions of streamflow and climate, providing easy access to reconstruction data as well as information about how the data were developed and can be used.

Tree-ring reconstructions are being used in water management and planning in a number of ways: to provide context for the observed flow record, for establishing more realistic worst-case drought scenarios, and as numerical input into water system models to test policies.

One-day workshops for water managers and stakeholders in states that include Colorado, Utah, Wyoming, Arizona, New Mexico, and Nevada, have comprehensively covered the methods for developing streamflow reconstructions from tree rings. Each workshop has a page with a summary and links to the presentations.

The Colorado River is the lifeline of the southwestern US. Over the years, much work has been done to assess the long-term variability in its streamflow, using tree rings and other environmental proxies.